US8132779B2 - Solenoid valve for brake system and manufacturing method thereof - Google Patents

Solenoid valve for brake system and manufacturing method thereof Download PDF

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Publication number
US8132779B2
US8132779B2 US12/495,538 US49553809A US8132779B2 US 8132779 B2 US8132779 B2 US 8132779B2 US 49553809 A US49553809 A US 49553809A US 8132779 B2 US8132779 B2 US 8132779B2
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Prior art keywords
seat
press
fitted
armature
sleeve
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US12/495,538
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US20100001216A1 (en
Inventor
Chung Jae Lee
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HL Mando Corp
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Mando Corp
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Assigned to HL MANDO CORPORATION reassignment HL MANDO CORPORATION CHANGE OF NAME (SEE DOCUMENT FOR DETAILS). Assignors: MANDO CORPORATION
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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60TVEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T8/00Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force
    • B60T8/32Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration
    • B60T8/34Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition
    • B60T8/36Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition including a pilot valve responding to an electromagnetic force
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16KVALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K31/00Actuating devices; Operating means; Releasing devices
    • F16K31/02Actuating devices; Operating means; Releasing devices electric; magnetic
    • F16K31/06Actuating devices; Operating means; Releasing devices electric; magnetic using a magnet, e.g. diaphragm valves, cutting off by means of a liquid
    • F16K31/0644One-way valve
    • F16K31/0655Lift valves
    • F16K31/0658Armature and valve member being one single element
    • F16K31/0662Armature and valve member being one single element with a ball-shaped valve member
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60TVEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T8/00Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60TVEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T8/00Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force
    • B60T8/32Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration
    • B60T8/34Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition
    • B60T8/36Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition including a pilot valve responding to an electromagnetic force
    • B60T8/3615Electromagnetic valves specially adapted for anti-lock brake and traction control systems
    • B60T8/363Electromagnetic valves specially adapted for anti-lock brake and traction control systems in hydraulic systems
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00Metal working
    • Y10T29/49Method of mechanical manufacture
    • Y10T29/494Fluidic or fluid actuated device making

Definitions

  • Embodiments of the present invention relate to a solenoid valve for a brake system and a manufacturing method thereof, to assure easier manufacture and lower manufacturing costs than the related art.
  • a general vehicular anti-lock brake system is designed to prevent wheel lockup when braking hard by controlling braking pressure applied to wheels based on sensed tire slip.
  • This type of brake system includes a plurality of solenoid valves that opens or closes flow-paths of brake hydraulic lines to control braking pressure.
  • Solenoid valves may be classified into normally opened type solenoid valves that are normally kept in an opened state, and normally closed type solenoid valves that are normally kept in a closed state.
  • FIG. 1 is a sectional view illustrating a conventional normally closed type solenoid valve.
  • the valve is press-fitted into a bore 14 of a modulator block 13 in which flow-paths of a brake system are defined.
  • the valve includes a hollow valve housing 1 having an inlet 3 and an outlet 4 for fluid flow.
  • a cylindrical sleeve 6 is inserted into one end of the valve housing 1 and in turn, an armature 5 is movably received in the sleeve 6 .
  • a valve core 7 is fitted into an open end of the sleeve 6 .
  • the valve core 7 serves not only to close an opening of the sleeve 6 , but also to move the armature 5 .
  • the armature 5 is moved to open or close a first orifice 8 a of a valve seat 8 .
  • the armature 5 has an opening/closing portion 5 a extending toward the valve seat 8 through a hollow 2 of the valve housing 1 .
  • a return spring 9 is interposed between the armature 5 and the valve core 7 .
  • the return spring 9 presses the armature 5 to allow the armature 5 to normally close the first orifice 8 a .
  • An excitation coil assembly 10 is installed around the sleeve 6 and valve core 7 for movement of the armature 5 .
  • a second orifice member 11 having a second orifice 14 a is inserted in the valve housing 1 , and an O-ring 12 is fitted around the valve housing 1 to seal a gap between the valve housing 1 and an inner surface of the bore 14 .
  • a filter member 15 having a filter is fitted around the valve housing 1 .
  • the conventional solenoid valve for a brake system is configured such that the valve seat is provided separately from the valve housing and thus, is press-fitted in the valve housing.
  • the valve housing has been mainly formed by forging and therefore, has a great number of components. This results in difficult manufacture and higher production price.
  • a solenoid valve for a brake system includes a valve core, a sleeve into one side of which the valve core is inserted, an armature movably received in the sleeve, a seat having an orifice that is opened or closed by the armature, a return spring to press the armature toward the orifice, a filter member press-fitted in a modulator block having an inlet path and outlet path, a filter being coupled to the filter member, and a seat housing having one side press-fitted into the filter member and the other side press-fitted into the sleeve, the seat being press-fitted in the seat housing, wherein the seat housing takes the form of a tubular member having an approximately constant thickness and is provided with a stepped portion to determine a position of the seat.
  • the sleeve may be provided at an end thereof with a flange to allow the sleeve to be coupled to the modulator block.
  • the seat housing is integrally formed by deep drawing.
  • FIG. 1 is a sectional view of a conventional normally closed type solenoid valve
  • FIG. 2 is a sectional view of a solenoid valve for a brake system according to an embodiment of the present invention, illustrating a closed state of an orifice
  • FIG. 3 is a sectional view of the solenoid valve according to the embodiment, illustrating an opened state of the orifice.
  • FIG. 2 is a sectional view of a solenoid valve for a brake system according to an embodiment of the present invention and illustrates a closed state of an orifice.
  • the solenoid valve for a brake system includes an excitation coil assembly 60 , a valve core 50 , a sleeve 30 , a return spring 45 , an armature 40 , a seat 20 , a seat housing 80 , and a filter member 70 .
  • the excitation coil assembly 60 has a cylindrical form and is coupled to an outer surface of the valve core 50 and to an outer surface of an upper part of the sleeve 30 .
  • the excitation coil assembly 60 includes a cylindrical coil case 61 , a bobbin 62 received in the coil case 61 , and an excitation coil 63 wound on an outer surface of the bobbin 62 .
  • the valve core 50 is press-fitted into an upper end of the sleeve 30 and may be fixed by welding.
  • a spring receiving recess 46 is formed in a lower surface of the valve core 50 , in which the return spring may be received.
  • the spring receiving recess 46 may be formed in an upper surface of the armature 40 .
  • the return spring 45 is located between the valve core 50 and the armature 40 and normally presses the armature 40 toward the seat 20 . As the return spring 45 presses the armature 40 toward the seat 20 , normally, the orifice 21 may be closed by a sphere 42 .
  • the armature 40 is vertically movably received in the sleeve 30 .
  • the armature 40 takes the form of a cylinder having an outer diameter corresponding to an inner diameter of the sleeve 30 .
  • An armature path 41 for oil flow is vertically defined in an outer surface of the armature 40 .
  • the sphere 42 is fitted in a lower end of the armature 40 , to close the orifice 21 of the seat 20 .
  • the orifice 21 may be opened or closed by movement of the armature 40 .
  • the armature 40 may have its own opening/closing protrusion to open or close the orifice 21 without the sphere 42 .
  • the armature 40 is movable under guidance of an inner surface of the sleeve 30 .
  • the sleeve 30 has a cylindrical form and is provided at one end thereof with a flange 31 .
  • the seat housing 80 is press-fitted into the end where the flange 31 is formed.
  • the flange 31 is secured to a modulator block 100 by a deformed portion 110 of the modulator block 100 .
  • the deformed portion 110 is caused by pressure applied around the flange 31 after the solenoid valve is press-fitted into the modulator block 100 .
  • the solenoid valve may be simply secured to the modulator block 100 without a separate member.
  • the orifice 21 of the seat 20 is formed in an upper surface of the seat 20 , so as to be opened or closed by the sphere 42 of the armature 40 .
  • the seat 20 is further formed with an inner path having an inner diameter greater than that of the orifice 21 .
  • the seat 20 is press-fitted in the seat housing 80 .
  • the seat housing 80 includes a large-radius portion 81 to be press-fitted into the sleeve 30 .
  • a first stepped portion 82 is provided below the large-radius portion 81 and in turn, a small-radius portion 83 is provided below the first stepped portion 82 , the small-radius portion 83 having a radius smaller than that of the large-radius portion 81 .
  • a second stepped portion 84 is provided below the small-radius portion 83 and in turn, a discharge path 85 is provided below the second stepped portion 84 , the discharge path 85 having a radius smaller than that of the small-radius portion 83 .
  • the seat 20 is press-fitted into the seat housing 80 until a lower end of the seat 20 reaches the second stepped portion 84 formed between the small-radius portion 83 and the discharge path 85 .
  • the second stepped portion 84 determines the position of the seat 20 and prevents the seat 20 from dropping further downward.
  • An oil inlet 86 is perforated in a side of the small-radius portion 83 , through which oil from an inlet path 102 of the modulator block 100 passes. Also, an oil outlet 87 is formed in a lower end of the discharge path 85 and is connected to a discharge path 103 of the modulator block 100 .
  • the seat housing 80 is formed by deep drawing of a metal plate. This may assure easier product manufacture than a conventional complicated forged product. Also, the seat housing 80 may take the form of an integral member without requiring several components as in the related art. This may entail enhanced workability and cost reduction.
  • the filter member 70 is press-fitted in the modulator block 100 , and a filter 71 is located in the inlet path 102 of the modulator block 100 to remove contaminants introduced thereinto.
  • the seat housing 80 is press-fitted into the filter member 70 .
  • FIG. 2 is a sectional view of the solenoid valve according to the embodiment and illustrates a closed state of the orifice.
  • the return spring 45 pushes the armature 40 toward the orifice 21 , thus causing the sphere 42 of the armature 40 to close the orifice 21 .
  • FIG. 3 is a sectional view of the solenoid valve according to the embodiment and illustrates an opened state of the orifice.
  • the armature 40 overcomes elasticity of the return spring 45 by magnetic force generated between the armature 40 and the valve core 50 , thus moving toward the valve core 50 and consequently, opening the orifice 21 .
  • a seat housing is formed by deep drawing of a metal plate, thus assuring easier product manufacture than a conventional complicated forged product.
  • the seat housing may take the form of an integral member without requiring several components as in the related art and this may entail enhanced workability and cost reduction.
  • the deformed portion may be obtained by pressure applied around the flange after the solenoid valve is press-fitted into the modulator block. Therefore, the solenoid valve may be simply secured to the modulator block without a separate member.
  • a seat by press-fitting a seat into a specific stepped portion of a seat housing between a small-radius portion and a discharge path of the seat housing, positioning of the seat may be possible to prevent the seat from dropping further, resulting in easy assembly operation.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Electromagnetism (AREA)
  • General Engineering & Computer Science (AREA)
  • Transportation (AREA)
  • Fluid Mechanics (AREA)
  • Magnetically Actuated Valves (AREA)
US12/495,538 2008-07-02 2009-06-30 Solenoid valve for brake system and manufacturing method thereof Active 2030-05-15 US8132779B2 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
KR10-2008-63777 2008-07-02
KR1020080063777A KR20100003784A (ko) 2008-07-02 2008-07-02 브레이크시스템용 솔레노이드밸브 및 그 제조방법
KR10-2008-0063777 2008-07-02

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US20100001216A1 US20100001216A1 (en) 2010-01-07
US8132779B2 true US8132779B2 (en) 2012-03-13

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US12/495,538 Active 2030-05-15 US8132779B2 (en) 2008-07-02 2009-06-30 Solenoid valve for brake system and manufacturing method thereof

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US (1) US8132779B2 (de)
KR (1) KR20100003784A (de)
CN (1) CN101618716B (de)
DE (1) DE102009031409B4 (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20110062362A1 (en) * 2009-09-17 2011-03-17 Advics Co., Ltd. Hydraulic device with solenoid valve
US20120248357A1 (en) * 2011-03-28 2012-10-04 Mando Corporation Solenoid valve for brake system
US11458942B2 (en) * 2016-09-23 2022-10-04 Continental Teves Ag & Co. Ohg Solenoid valve, in particular for slip-controlled motor-vehicle brake systems

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2991743A1 (fr) * 2012-06-08 2013-12-13 Bosch Gmbh Robert Procede de realisation d'une soupape electromagnetique et soupape obtenue
JP6050705B2 (ja) * 2013-03-13 2016-12-21 日立オートモティブシステムズ株式会社 電磁弁
JP2016016828A (ja) * 2014-07-10 2016-02-01 株式会社デンソー ブレーキ用流体制御装置
JP6347444B2 (ja) * 2014-09-12 2018-06-27 日立オートモティブシステムズ株式会社 電磁弁
JP6521807B2 (ja) * 2015-09-08 2019-05-29 日立オートモティブシステムズ株式会社 電磁弁、液圧制御装置およびブレーキ装置
KR102480309B1 (ko) 2015-12-04 2022-12-23 에이치엘만도 주식회사 브레이크 시스템용 솔레노이드밸브
CN105416264B (zh) * 2015-12-14 2018-03-30 武汉元丰汽车电控系统有限公司 一种汽车防抱死制动系统
CN105387263A (zh) * 2015-12-14 2016-03-09 武汉元丰汽车电控系统有限公司 一种贴合方法
CN106545683A (zh) * 2016-12-05 2017-03-29 中国煤炭科工集团太原研究院有限公司 防爆车辆变速箱用浇封型高速开关电磁阀
CN107289176B (zh) * 2017-06-19 2023-06-06 万向钱潮股份公司 一种汽车制动用常闭电磁阀

Citations (8)

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Publication number Priority date Publication date Assignee Title
US5267785A (en) * 1991-12-18 1993-12-07 Robert Bosch Gmbh Method for switching a pressure control device
US5605386A (en) * 1994-07-28 1997-02-25 Robert Bosch Gmbh Solenoid valve for slip-controlled hydraulic brake systems in motor vehicles
US6152420A (en) * 1996-02-07 2000-11-28 Robert Bosch Gmbh Electromagnetically actuated valve for hydraulic motor vehicle brake systems
US6254199B1 (en) * 1996-09-03 2001-07-03 Robert Bosch Gmbh Solenoid valve for a slip-regulated hydraulic brake system of a vehicle
US6588857B2 (en) * 2001-09-21 2003-07-08 Mando Corporation Solenoid valve for brake systems
US6644623B1 (en) * 1999-06-23 2003-11-11 Continental Teves Ag & Co. Ohg Electromagnetic valve
KR20040091434A (ko) 2003-04-21 2004-10-28 주식회사 만도 브레이크 시스템용 솔레노이드밸브
US6988707B2 (en) * 2002-04-24 2006-01-24 Hyundai Mobis, Co., Ltd. Anti-lock brake equipment solenoid valve

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Publication number Priority date Publication date Assignee Title
DE50012083D1 (de) * 1999-06-08 2006-04-06 Continental Teves Ag & Co Ohg Elektromagnetventil
DE10046046A1 (de) * 2000-02-23 2001-08-30 Continental Teves Ag & Co Ohg Elektromagnetventil
DE10038091B4 (de) * 2000-08-04 2009-01-15 Robert Bosch Gmbh Magnetventil, insbesondere für eine schlupfgeregelte, hydraulische Fahrzeugbremsanlage
DE10103284A1 (de) * 2001-01-25 2002-08-01 Bosch Gmbh Robert Mehrteilige Filterkombination
DE10323656A1 (de) * 2002-12-13 2004-07-15 Continental Teves Ag & Co. Ohg Elektromagnetventil
JP4856413B2 (ja) 2005-10-04 2012-01-18 富士通株式会社 演算処理装置、情報処理装置、及び演算処理装置の制御方法

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5267785A (en) * 1991-12-18 1993-12-07 Robert Bosch Gmbh Method for switching a pressure control device
US5605386A (en) * 1994-07-28 1997-02-25 Robert Bosch Gmbh Solenoid valve for slip-controlled hydraulic brake systems in motor vehicles
US6152420A (en) * 1996-02-07 2000-11-28 Robert Bosch Gmbh Electromagnetically actuated valve for hydraulic motor vehicle brake systems
US6254199B1 (en) * 1996-09-03 2001-07-03 Robert Bosch Gmbh Solenoid valve for a slip-regulated hydraulic brake system of a vehicle
US6644623B1 (en) * 1999-06-23 2003-11-11 Continental Teves Ag & Co. Ohg Electromagnetic valve
US6588857B2 (en) * 2001-09-21 2003-07-08 Mando Corporation Solenoid valve for brake systems
US6988707B2 (en) * 2002-04-24 2006-01-24 Hyundai Mobis, Co., Ltd. Anti-lock brake equipment solenoid valve
KR20040091434A (ko) 2003-04-21 2004-10-28 주식회사 만도 브레이크 시스템용 솔레노이드밸브

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20110062362A1 (en) * 2009-09-17 2011-03-17 Advics Co., Ltd. Hydraulic device with solenoid valve
US8348232B2 (en) * 2009-09-17 2013-01-08 Advics Co., Ltd. Hydraulic device with solenoid valve
US20120248357A1 (en) * 2011-03-28 2012-10-04 Mando Corporation Solenoid valve for brake system
US11458942B2 (en) * 2016-09-23 2022-10-04 Continental Teves Ag & Co. Ohg Solenoid valve, in particular for slip-controlled motor-vehicle brake systems

Also Published As

Publication number Publication date
DE102009031409B4 (de) 2018-11-15
US20100001216A1 (en) 2010-01-07
CN101618716B (zh) 2012-12-26
KR20100003784A (ko) 2010-01-12
CN101618716A (zh) 2010-01-06
DE102009031409A1 (de) 2010-02-04

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